DC booster



FIG. 1 is a perspective view of a DC booster showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is an enlarged left side elevation view thereof;

FIG. 5 is an enlarged right side elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a back elevation view thereof; and,

FIG. 8 is a bottom perspective view thereof.

It is understood that the broken cables show an undetermined length

The broken lines showing are for illustrative purposes and form no part of the claimed design. 

The ornamental design for a DC booster, as shown and described. 